A picture released by Kuwait state news agency KUNA on Tuesday afternoon showed Sheikh Al-Thani sat next to Kuwait’s Emir Sheikh Sabah Al-Ahmad Al Jaber Al-Sabah, who has sought to mediate between the two sides.

On Monday, Kuwait’s foreign minister Sheikh Sabah Al Khaled told a gathering of GCC ministers that the dispute should be addressed at the two-day summit on Tuesday and Wednesday even if it was not resolved.

Sources told UAE publication The National that Sheikh Sabah suggested the meeting should be used to lay the groundwork for a possible resolution, warning the integrity of the GCC should not be compromised.

The first session of the summit will be held at Bayan Palace at 5.30pm and will be followed by an official dinner hosted by Kuwait’s Emir.

On Wednesday regional leaders and ministers are expected to convene for a second closed session at 11:30am.

It was unclear who would be representing Saudi Arabia, the UAE and Bahrain at the meetings.

UAE foreign minister of state for foreign affairs Dr Anwar Gargash, Saudi foreign minister Adel Al Jubeir and Bahrain’s deputy prime minister Mohammed bin Mubarak appeared to be the selected attendees for the summit on Tuesday.

Oman’s deputy prime minister Sayyid Fahd bin Mahmoud also arrived in Kuwait City to take part in the sessions, which normally would be attended by heads of state.

UAE state news agency WAM reported this week that the country’s President Sheikh Khalifa bin Zayed al-Nahyan was seeking the formation of a “joint cooperation committee” with Saudi Arabia on economic, political and military issues in a move that could cast a shadow over the meetings.